A soft, buttery cake layered with rich cinnamon crumb topping — perfect for breakfast, dessert, or a cozy afternoon treat.
Crumb Topping:
1 3/4 cups all-purpose flour
1/2 cup brown sugar
1/2 cup granulated sugar
1 1/2 teaspoons cinnamon
1/4 teaspoon salt
1/2 cup (1 stick) unsalted butter, melted
Cake:
2 cups all-purpose flour
1 teaspoon baking powder
1/2 teaspoon baking soda
1/4 teaspoon salt
1/2 cup (1 stick) unsalted butter, softened
3/4 cup granulated sugar
2 large eggs
1 cup sour cream
1 1/2 teaspoons vanilla extract
Preheat oven to 350°F (175°C). Grease and line a 9×13 or 8×8 baking pan.
Mix crumb topping ingredients in a bowl until clumpy. Chill briefly.
Cream butter and sugar until fluffy. Add eggs one at a time, then vanilla.
In another bowl, whisk flour, baking powder, baking soda, and salt.
Add dry ingredients alternately with sour cream to the creamed mixture.
Spread batter in pan. Top evenly with crumb mixture, pressing gently.
Bake 35–45 minutes or until toothpick comes out clean.
Cool in pan before slicing. Dust with powdered sugar if desired.
Add nuts or fruit for variation
Store covered at room temperature for 3–4 days
Freeze up to 2 months, well wrapped